static private void SaveKeys(IList <Item> items, Type keyType, Object target)
{
var code = EnumGenerator.GetCode(keyType.Namespace, keyType.Name, items.Select(x => x.key));
var path = AssetDatabase.GetAssetPath(target);
var pathID = Path.Combine(Path.GetDirectoryName(path), keyType.Name + ".cs");
File.WriteAllText(pathID, code);
AssetDatabase.Refresh(ImportAssetOptions.Default);
}